• no laser-induced damage of solar cells, nor damage to the complete solar panel; • 50% regeneration of the solar cells; • no change in satellite construction; • a quite independent regeneration system. Acknowledgement I am grateful to Dr. I. Wilhelm of the Nuclear Centre of Charles University, Prague, for proton implantation of all photovoltaic cells in this experiment. REFERENCES [1] Poulek, V. (1984) Proceedings of the 4th European Symposium ‘Photovoltaic Generators in Space', ESA SP-210, pp. 143-148. [2] Narayan, J. & Holland, O.W. (1984) Journal of Applied Physics, 56, pp. 2913-2921. [3] Yamaguchi, M., Ando, K.., Yamamoto, A. & Uemura, C. (1985) Journal of Applied Physics, 58, pp. 568-574. [4] Barnes, C.E. & Samara, G.A. (1986) Applied Physics Letters, 48, pp. 934-936. [5] Harnagel, G., Welch, D., Cross, P. & Scifres, D. (1986) Lasers and Applications, June 1986, pp. 135-138. [6] Thornton, R.L., Burnham, R.D., Paoli, T.L., Holonyak, N. & Deppe, D.G. (1985) Applied Physics Letters, 48, pp. 7-9. [7] Poulek, V. (1983) Paper IAF-83-69, Acta Astronautica, 11, pp. 697-700.
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